Isn't Dubstep bass all about FM synthesis?
You really can't get that complex harmonic bwaaaap sound with just
filters alone. The muse of Chowning must be invoked.
My Yam db60xg (NEC XR385 actually) has several awesome basses, and if
it's not right, use qxgedit to morph it into one, and then twiddle
around the filter x-over, widths and slopes (graphically by mouse, it
rocks) and ADSR based on the bpm of the bass you're playing and you're
like there dude :-) . I'm not sure how much of these AWM2 basses are
"just filters alone" versus FM, versus FM'd samples of basses (which
is what makes yamaha's sound so good). But whatever it is, it works.
Also, some of their excellent sounding patches are actually
combinations of two voices, each with their own sets of filters etc.
See also Yamaha SY77 and SY99 and their emulations, which have good
bass sounds with rich modulation.
Regarding the db50xg -- Rui was absolutely right when he wrote (
http://www.rncbc.org/drupal/node/151 ): "This is strictly pure
nineties memorabilia but one of the finest pieces of junk you could
rig into a PC and turn it on a full-fledged rave machine. Do you
remember the days? Awe my 8)"
Since FM is probably one of the easiest forms of synthesis to
"compute" (c.f. chowning) look for Yamaha FM bass patches for
starters. Consider also the deicsonze (french for Dx11) synth, such as
comes with Muse: /usr/lib64/muse/synthi/deicsonze.so
PS: A quick google search gives:
"I use multiple instruments to construct the sound. I use FM syntheses
to create some really interesting tones and movement within the
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